An Orifice Flange is a disc-shaped flange, engineered with either a Raised Face or a Ring Type Joint facing. The traditional orifice flange assembly consists of a pair of flanges, orifice plate, bolts, nuts, gaskets, jacking screws and plugs. It generally come with either Raised Faces or RTJ (Ring Type Joint) facings.
We HT PIPE is the manufacture that provide all kinds of steel flanges like Orifice Flanges, Plate Flanges, Weld Neck Flanges, Slip On Flanges, Socket Weld Flanges, and so on, and also other special flanges according to the client's requirement.
Orifice Flange Specification:
| Standard |
Type |
Class |
Size |
| ASME B16.5 |
WN/LWN/SO/Blind/Lap Joint |
150#-2500# |
1/2"-24"(Except Blind Flange 2500lb 1/2"-12") |
| EN1092-1:2002 |
Plate flange for welding/loose plate flange with weld-on plate collar or for lapped pipe end/Blind Flange/WN flange |
PN2.5-PN100 |
DN10-DN4000 |
| Other |
WN/LWN/SO/SW/blind/plate/threaded/anchor/swivel/girth/lap joint/reducing/orifice |
| spectacle blind/paddle blind/spacer ring/orifice plate/bleed ring |
| Speical Products: Rings/Forgings/Disc/Shaft Sleeve |
| Sealing Surface |
RF FF RTJ TF GF LF LM |
| Flange Face Finish |
Stock Finish/Spiral Serrated/Concentric Serrated/Smooth Finish(Ra 3.2 and 6.3 micrometers) |
| 125-250 AARH(it is called smooth finish) |
| 250-500 AARH(it is called stock finish) |
| Coating |
Vanish, yellow paint, anti-rust oil, galvanizing etc |
Orifice Flange Material Grades:
| Carbon Steel |
ASTM /ASME A/SA105(N), A350 LF2/LF3, A694 F52, F56, F60, F65, F70 |
| Alloy Steel |
ASTM/ASME A/SA 182 F5, F9, F11, F22, F91 |
| Stainless Steel |
ASTM/ASME A/SA 182 F304, 304L, 304H, 310H, 316, 316H, 316L,
316Ti, 317, 317L, 321, 321H, 347, 347H, 904L |
Duplex and
Super Duplex |
ASTM/ASME A/SA 182 F44, F45, F51, F53, F55, F60, F61,
S31803, S32205, S32550, S31254, SMO254, S32750, S32760, S32950 |
| Nickel Alloy Steel |
ASTM/ASME B/SB 564 UNS N02200(NICKEL 200), UNS N04400, (MONEL 400),
UNS N08825( INCOLOY 825), UNS N06600(INCONEL 600), UNS N06601(INCONEL 601),
UNS N06625(INCONEL 625), UNS N10276(HASTELLOY C276) |
| ASTM/ASME B/SB160 UNS N02201(NICKEL 201), ASTM B/SB472 UNS N08020(Alloy 20) |
| Copper Alloy |
ASTM/ASME B/SB151 UNS N07060, 71500, C70600(CuNi 90/10), C71500(CuNi 70/30) |
| Titanium |
ASTM/ASME B/SB381 Grade 2, Grade 5, Grade 7 |
Manufacturer, exporter & supplier of ASME/ANSI B16.5 Carbon steel Orifice Flanges, Alloy steel Orifice Flanges, Nickel alloy steel Orifice Flanges, Stainless steel Orifice Flanges, Duplex steel Orifice Flanges, ASTM A105/105N, ASTM A350 Lf2, ASTM A694, ASTM A182, ASTM B564 Orifice Flanges manufaturer in Zhengzhou HT PIPE.
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